Leather press



I. MITCHELL.

LEATHER PRESS.

APPLICATION FILED JULY1'|.192I.

Patented Nov. 28, 1922..

2 ,SHEETS-SHEET I.

IN VEN TOR. J5 mac/W30 e if,

w %TTORNE Y.

l. MITCHELL.

LEATHER PRESS.

. APPLICATION FILED JULY 11. 1921- 1 $31,23 Patented Nov. 28, 1922..

2 SHEETSSHEET Z.

Patented Nov. 28, 1922.

erase Lnliriimtrnnss.

Application filed July 11,

To all whom it may concern:

Be it known that 1, Isaac MITCHELL, a citizen of the United States, residing at Oakland, in the county of Alameda, State of California, have invented a new anduse l'ul Leather Press, of which the following is a specification, in such full and clear terms as will enable those skilled in the art to construct and use the same. i

This invention relates to a leather press especially adapted toa number of operations in the manufacture of shoes, and its object is to provide a machine which will hold a sheet of leather firmly while it is being formed into the desired shape to cover a last or other desired form of die.

It will be understood by those skilled in the art that in manufacturing leather it is often necessary to hold the sheet of leather in a fixed position while the form is pressed against the sheet of leather to stretch it and produce the desired figure on the leather, or to produce the desired shape of the entire body of the sheet as is done in covering the ordinary shoe last.

Many other uses will suggest themselves to those skilled in the art of leather manufacture, but the present principal object to be attained is to hold the sheet, whether of leather or leather and cloth, with one pair of plates while another object is forced against the sheet of leather to give it the desired form.

Other objects of the invention will appear as the description proceeds.

An embodiment of the invention is shown in the accompanying drawings in which the same reference numeral is applied to the same portion throughout, but I am aware that there may be modifications thereof.

Fig. 1 is a front elevation of the complete machine.

Fig. 2 is a side elevation of the complete machine, and

Fig. 3 is a plan view of the complete machine.

The machine consists of the base 1. Four posts 4 to 7 inclusive are bolted to the base and support the table top 2. The slides 8 and 9 are supported on the table top and have rods 10 and 11 passing therethrough, which rods are connected with the cross bar 12 at their lower ends, and with the cross bar 13 at their upper ends.

At the top of the tubular slides .8 and 9 there are two plates 14 and 15 through 1921. Serial no. asarza.

which plates pass short posts 16 and 17. The posts 16 and 17 extend into tubes 18 and 19 supported adjacent the tubular slides S and 9. The posts 16 and 17 are slidable in the tubes 18 and 19 and each has a pin 20 which rests upon a washer 21. The washer 21 is in turn held raised to the position shown in Figure 1 by means of a stiff spiral spring 22.

Two spiral springs 23, 24 support the member forming the slidable frame 10 to 13 inclusive in a raised position normally. An eye bolt 25 through the cross bar 12 is connected with a hook 26. This hook is also connected to a stirrup link 27 pivotally connected to a lever 28. The lever 28 is connected by means of an eye bolt 29 and an eye bolt 30 passing through the base 1 at the back of the machine. A hook 32 has a threaded shank 33 which is secured to the base at the front of the machine. The slides 10, 11 carry two channel bars 36, 37 which bars afford the support for the follower plate 38.

The posts 16 and 17 have fixed washers 38, 39 which form the support for the die plate 10 which is placed upon the top of the slides 16 and 17.

At the center of the frame of the machine there is a bearing 1-1 which has openings therethrough for the threaded post 412 and for a shaft 12-}. The post 42 is threaded into the hub of a bevel gear 14:. The shaft 13 has a hand wheel 45 and bevel gear 46 in mesh with. the bevel gear 14: which raises and lowers the screw post 42. The screw post 12 has a fixed plate 42 at its upper end upon which may be supported any desired object to be pressed into the leather. The shaft has bearing supports 17 and 417.

In operation the sheet of leather to be worked upon is placed between the follower plate 38 and die plate 40. The workman then places his foot upon the lever 28 and forces it down under the hook 32. This will hold the sheet of leather between the follower and die plate under the pressure of the springs tending to lift the slides 16 and 17. Thereupon the operator will rotate the wheel 45 to raise the figure carried on top of the screw 42 to force it into contact with the leather sheet, thereby stretching the leather to fit'any desired form.

What 1 claim is as follows, but various modifications may be made in the construction shown in the drawings and above particularl described form, within the purview of my invention.

1. A leather press comprising a slidable frame, a follower carried thereby, a resiliently supported die plate between which and the follower a sheet of leather may be secured, and a screw for forcing an object through the die plate against the leather sheet.

2. A leather press comprising a frame, a slide therein, a follower carried thereby, a die plate, means to resiliently support said die plate, means to pull the follower plate against the die plate, means to look it in a given position, and a screw for pressing an object against a sheet of leather held by the die plate and follower.

3. An apparatus of the class described comprising a fixed frame, a second frame slidable therein, a follower plate carried thereby, a pair of resilient supports, a die plate carried by said supports, means to bring the follower and die plate together, means to lock said plates in a given position, and a screw for forcing an object through the die plate against a sheet of leather held between the die plate and follower.

41-. Apparatus of the class described, comprising a fixed frame,'a frame slidable therein, a follower plate carried by the last frame, a die plate below the follower plate, vertically slidable supports for carrying the die plate, springs to resiliently support the die plate, a screw for forcing an object through the die plate, and a foot-lever for depressing the follower plate and die plate at Will.

In testimony whereof I have hereunto set my hand this 30th day of June A. D. 1921.

ISAAC MITCHELL. 

